Still no hash literal :-(
`ImmutableList.of("a", "b", "c")` is not as concise as e.g. Python, but it's not bad.
Swift has this: var airports: [String: String] = ["TYO": "Tokyo", "DUB": "Dublin"]
I like the swift example... Map<String, String> map = new HashMap<>(){"TYO": "Tokyo", "DUB": "Dublin"};